Acoustic sensitivity predictions of single-mode optical fibers using Brillouin scattering

Lagakos, N.; Bucaro, J. A.; Hughes, Ronald G.

doi:10.1364/ao.19.003668

Cited by 61 publications

(13 citation statements)

References 8 publications

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“…8 that Poisson's ratio increases by 0.0033 per 10 mol% of GeO 2 concentration, whereas other sources suggest that decreases by 0.0167 per 10 mol% of dopant concentration. 13,28,31 Our numerical analysis clearly shows that negative values of the sensitivity to strain can only be obtained if we assume that decreases with dopant concentration. Furthermore, we observed that for cl Ϫ co ϭ0.014, the calculated sensitivity to strain averaged over mode orders agree well with the aver- aged experimental values.…”

Section: Modeling Of the Modal Birefringence And The Sensitivity To Smentioning

confidence: 82%

Measurements and modeling of modal birefringence and sensitivity to strain in a three-mode elliptical-core fiber

Chmielewska

Urbańczyk

2004

Opt. Eng

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We measure phase and group modal birefringence and also polarimetric strain sensitivity in a three-mode elliptical-core fiber for all spatial modes. Our results show a very high difference in fiber sensitivity to strain versus mode order, which is negative for the E 11 mode and positive for E 31 mode. We also model all measured parameters using Optiwave BPM-Cad and Cosmos/M software packages. The measured values of phase and group modal birefringence agree well with those obtained from calculations for all spatial modes. We do not observe as good an agreement between experimental and calculated values of strain sensitivity, which is most probably caused by the lack of reliable material constants for SiO 2 /GeO 2 glasses.

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Section: Modeling Of the Modal Birefringence And The Sensitivity To Smentioning

confidence: 82%

Measurements and modeling of modal birefringence and sensitivity to strain in a three-mode elliptical-core fiber

Chmielewska

Urbańczyk

2004

Opt. Eng

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“…In this study we considered Ge-doped rods with parabolic profile of refractive index. The main mechanical and optical properties of Ge-doped silica as function of the GeO 2 concentration are [5][6][7][8][9][10][11][12][13][14][15][16][17]: Taken into account the elastooptic effect is possible to represent the refractive index changed by the stresses as:…”

Section: Modelling Methodsmentioning

confidence: 99%

Hybrid photonic crystal fiber sensing of high hydrostatic pressure

Franco

Serrão²,

Pitarello

et al. 2011

SPIE Proceedings

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The opto-mechanical response of Hybrid Photonic Crystal Fiber (HPCF) with Ge-doped inclusions is numerically modeled for high hydrostatic pressure sensing purpose. A typical photonic crystal fiber (PCF) consists of a silica solidcore and a cladding with a hexagonal lattice of air-holes. The HPCF is similar to the regular PCF, but a horizontal line of air-holes is substituted by solid high index rods of Ge-doped silica. The optical guidance in HPCFs is supported combining two physical effects: the modified total internal reflection and the photonic bandgap. In such fibers, the Gedoped inclusions induce residual birefringence. In our analysis, we evaluate the susceptibility of the phase modal birefringence and group birefringence to hydrostatic pressure. The analyses were performed at a photonic bandgap with central wavelength near to 1350 nm. The polarimetric pressure sensitivity is about 10 rad/MPa x m at λ = 1175 nm.

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“…One experimental evaluation of the dependence of E on dopant concentration indicates that E decreases 0.8% for 1 mol% of GeO 2 concentration. In addition, ν increases with dopant concentration according to a linear model given by [9]:…”

Section: Simulationmentioning

confidence: 99%

Group Polarimetric Pressure Sensitivity of an Elliptical-Core Side-Hole Fiber at Telecommunication Wavelengths

Sadeghi

Latifi

Murawski

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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In this paper, we experimentally studied group polarimetric pressure sensitivity of a fabricated elliptical-core side-hole fiber (EC-SHF). We investigated the polarimetric behavior of this fiber under three steps of chosen pressure intervals of 100 to 104 lbf/in 2 , 1000 to 1004 lbf/in 2 , and 2000 to 2004 lbf/in 2 , respectively. We obtained high group polarimetric sensitivity from 2.6 × 10 −7 (3.7 × 10 −5 MPa −1 ) to 3 × 10 −7 (lbf/in 2 ) -1 (4.3 × 10 −5 MPa −1 ) under 100 to 104 lbf/in 2 pressure interval, which decreased under upper pressure intervals. We carried out a simulation to understand the reason for change of polarimetric sensitivity at telecommunication wavelengths (1550-nm region) and also the relationship between the group birefringence variation and increasing pressure. For this purpose, by using finite-element method, we demonstrate the effects of structural deformation and stress variation of EC-SHF cross section on spectral transformation of fundamental polarization modes. Our simulation and experimental results are in agreement with each other and indicate that under different pressure intervals, shorter wavelengths have more birefringence variation and pressure sensitivity than longer wavelengths. These results show that changing the group birefringence and pressure sensitivity in lower pressure are higher than the upper ones.Index Terms-Elliptical core side-hole fiber, finite element method, group polarimetric sensitivity, telecommunication wavelengths.

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Acoustic sensitivity predictions of single-mode optical fibers using Brillouin scattering

Cited by 61 publications

References 8 publications

Measurements and modeling of modal birefringence and sensitivity to strain in a three-mode elliptical-core fiber

Measurements and modeling of modal birefringence and sensitivity to strain in a three-mode elliptical-core fiber

Hybrid photonic crystal fiber sensing of high hydrostatic pressure

Group Polarimetric Pressure Sensitivity of an Elliptical-Core Side-Hole Fiber at Telecommunication Wavelengths

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